de kinder



(K0 Model.) 2 Sheets-Sheet l.

J. J. DE KINDER.

PUMP.

'N0.335,11 1. PatentedFeb. 1886.

WITNESSES: v INVENTOR am." W/

N. PETERS Phuwulho npher, Waahinglun. D. c.

2 Sheets-Sheet 2.

(No Model.)

J. J. DE KINDER;

PUMP.

Patented Feb. 2, 1886.

Ilnurnn Smarts ATFNT Urrrcie.

JOSEPH J. DE KINDER, OF PHILADELPHIA, PENNSYLVANIA.

PUMP.

ESPECIFICATION forming part of Letters Patent No. 335,111, datedFebruary 2, 1886.

Application filed March 20, 1885. Serial No. 159,531. (No model.)

To all whom it may concern:

Be it known that I, J OSEPH J. DE KINDER, a citizen of the UnitedStates, residing in the city and county of Philadelphia, in the State ofPennsylvania, have invented an Improved Pump, of which the following isa specification.

The object of my invention is the produc tion of a continuously anduniformly acting pump, in which ample valve area is provided,

andin which the rack of the plunger or piston is as far as possiblecushioned, and the shock of the water on the valves diminished.

Apparatus embodying a good form of my improvement is represented in theaccompanying drawings, and describedin this specification, theparticular subject-matter claimed as novel being hereinafter definitelyspecified.

In the drawings, Figure 1 represents in central longitudinal verticalsectional side eleva tion an apparatus embodying my improve ments. Fig.2 is an end partially sectional and partially elevational view of thesame. Fig. 3 is a side elevation of the same. Fig. 4 is a fragmentarysectional detail of a good form of valve, and Fig. 5 is a plan of ajamnut which I employ in said valve.

Similar letters of reference indicate corresponding parts in all thefigures.

In the drawings, A represents a bed, upon which the pump, as anentirety, is mounted.

B is a horizontal pumpcylinder, which circumscribes a piston-chamber, O.

b b are horizontal partitions or diaphragms, which bridge the cylindricinterspace between the interior of the pump-cylinder and the exterior ofthe piston-chamber, and which divide the said interspace into an uppercompartment, which I term the delivery-chamber, D, and alowercompartment, which I term the suction-chamber, E.

F is an inlet-pipe, opening into the suctionchamber, and serving tosupply the pump with the water or other liquid to be operated upon.

G is an air-chamber, of any preferred form, mounted upon thepump-cylinder, and containing' a vertical delivery-tube, H, which leadsfrom the delivery-chamber, and has its outlet near the crown of saidair-chamber.

I is an outlet-pipe leading from the airchamber, near the base thereof,and below the dischargingorifice of the deliverytube. The

'ainchainber has no communication with the delivery-chamber, except bymeans of the delivery-tube.

The ainchamber G and the delivery-tube H together serve to relieve thevalves from any shock arising from any cause-as, for instance, by suddenshutting off of the escape through the outlet-pipe I-and they serve thispurpose by providing a compressible medium viz., air between the valvesand the outlet. They also together serve to relieve the valves of theweight of water which would otherwise, where the pump was forcing to anelevation, be superimposed upon them.

9 is an air-cock applied to the crown or up per portion of theair-chamber, and J is a gage or level applied to said air-chamber.

The pump-cylinder is provided with a series of man-holes, K, whichafford access to the delivey and suction chambers.

L is an elongated plunger or piston, coir veniently of cylindriccontour, and having a bearing, M, within which it reciprocates, andwhich bearing is sustained in a transverse diaphragm, m,centrallyerected within the pistonchamber, and dividing the latter into twocompartments.

Z is the pistonrod, which passes through a stuffing-box, b formed in oneof the pumpcylinder heads. The piston is adapted to be reciprocated byany preferred means.

In the drawings I have represented the piston-chamber as of polygonaltransverse sec tion, it being externally a hexagonal prism, the sides ofwhich are perforated with valveports 0, provided with spring controlledvalves, preferably of a construction hereinafter detailed, and of whichthose controlling ports opening into the delivery-chamber open outward,while those controlling ports opening from the suction-chamber openinward and within the piston-chamber.

In Fig. 4 I have represented such a valve as I prefer to employ appliedto one of the valve-ports. Its construction is this: Convenientlyconnected with the port 0, preferably by means of a hub, R, and spiderr, is a fixed valve-stem, Q, provided with a fixed circumferentialflange, g, which rests,when the stem is introduced within the hub, uponthe top of said hub, and is secured thereto by a nut, S,

or kindred fastening. Around the valve-stem is a removable bushing, T,which is adapted to be replaced as soon as worn out, and which is heldin place by a washer-cap, P, secured upon the bushing and to the stem bya nut, p, and ajamnut, 19

The bushing is made of the same diameter as the hub and flange on thestem,and around it is fitted,so as to be free for movement thereupon, aloose valve-washer, N, upon which is superimposed a metal collar, 0.Between this collar 0 and the washer-cap P is interposed a coiledspring, U, which serves ordinarily to retain the valve-washer down uponits seat upon the valve-port.

I do not herein claim or seek to cover the feature of a removablebushing upon a valvestem.

Water forcing its way through the port about the spider operates uponthe valvewasher so as to elevate it and compress the spiral spring, andso afford exit for the fluid.

All of the valves are preferably of the above description; but, asalready stated,those which are applied to that portion of thepiston-chamher which is above the horizontal diaphragms open into thedelivery chamber or outward, while those which are applied to thatportion of the piston-chamber which is below the horizontal diaphragmsopen away from the suction-chamber and into said piston chamber.

The precise construction and mode of application of the valve-stem tothe port can of course be varied. I however prefer the constructionwhich I above describe. The valve, however, consists, essentially, ofthe springcontrolled washer adapted to ride upon or have movement withrespect to a fixed valvestem formed in the preferred constructiondescribed by the removable bushing which surrounds the stem proper.

The areas of the suction and delivery chambers being about the same, thevalves of both chambers are preferably made of the same size and haveabout the same lift, so that all racing of water through thedelivery-valves is avoided.

Having thus described my improvements, their operation will be readilyunderstood. Water or other liquid existing under pressure in theinlet-pipe and'suction-chamber is in either advance stroke of the pistonunder the partial vacuum formed in one or the other compartment of thepiston -chamber sucked alternately into said compartments, the lower setof valves being readily lifted by its pressure to admit it. Upon thereturn-stroke of the piston the water is forced out ofthe-compartmentinto which it has been sucked, the upper set of valves ofsaid compartment readily lifting for its escape, and the water is soalternately sucked from the suctionchamber into one compartment of thepiston-chamber, while it is forced from out the other compartment intothe delivery-chamber, out of which, through the delivery-tube, it isforced into the top of the air-chamber, from which it descends to theoutlet-pipe.

In the operation of the device the water stands in the air-chamber up toabout the level of the top of the delivery-tube, above which level theair-chamber is filled with air.

The operation of the device, as will be readily understood, is thereforeconstant.

Having thus described my invention, I claim In apumping apparatus, thefollowing elements in combination: a pump-cylinder, a circumscribedpiston chamber, diaphragms interposed between the pump-cylinder and thepiston-chamber and dividing the circumscribed interspace between theminto a delivery-chamber and a suction-chamber, an inlet communicatingwith the suction-chamber, a delivery pipe leading from thedeliverychamber to within an air-chamber, an airchamber, an outletleading therefrom below the delivering-orifice of the delivery-pipe, apiston bearing within the piston-chamber, a transverse diaphragm forsupporting said bearing and dividing the piston-chamber into twocompartments, a piston'plunger adapted to reciprocate in said bearingand with respect to the said two compartments, valve-ports in bothcompartments of the piston chamber opening through the walls thereof,respectively, into the delivery-chamber and into the suctionchamber,valves opening into the pistonchamber and applied to the ports thereofwhich communicate with the suction-chamber, and valves opening into thedelivery-chamber and applied to the ports of the piston-chamber whichcommunicate with said deliverychamber,substantially as shown anddescribed, and for the purpose specified.

In testimony whereof I havehereunto signed my name this 13th day ofMarch, A. D. 1885.

JOSEPH J. DE KINDER.

In presence of J. BONSALL TAYLOR, JOHN J OLLEY, Jr.

